Core Product Research Articles

Influence of active and passive equipment for advanced pressurized water reactor on thermal hydraulic and source term behavior in severe accidents

Extensive studies have been carried out on the behavior of core degradation and fission products of common pressurized water reactors (PWRs). However, few of them have investigated the relationship between thermal hydraulic and fission product behavior in advanced passive PWRs. Due to the impact of thermal hydraulic behaviors in different accident sequences on the release and transportation of fission products, an integrated severe accident analysis (ISAA) code with highly coupled thermal hydraulic and source term calculations is required to simultaneously analyze thermal hydraulic and source term behavior. For advanced passive PWRs, important safety systems that may affect the behavior of the core and fission products should be considered. It is therefore necessary to simulate the thermal hydraulic and fission product behavior of advanced passive PWRs. In this study, the ISAA code is adopted to simulate the occurrence of a hypothetical double ended cold leg LBLOCA of HPR1000 in three scenarios of equipment failure. The results show that the high-temperature fuel rods and cladding materials exhibit delayed failure at the lower position of the active core, whereas earlier failure at higher position during the reflooding. Active and passive equipment affects fuel temperature, the oxidation conditions of the fuel, the interaction of fission products and structural materials, and the state of the fuel, thereby affecting the release of fission products in the fuel. HPR1000 only relies on passive equipment to relieve the core degradation in severe accidents, realize the in-vessel retention of melt, and eliminate the ex-vessel release possibility of fission product. It is hoped that the results can provide references for HPR1000 to formulate the severe accident management guidelines (SAMG).

Applying the 4Ps of social marketing to retain and engage participants in longitudinal cohort studies: generation 2 Raine study participant perspectives

BackgroundInvestigations of participant retention in longitudinal health and medical research, document strategies that work best but overlook social marketing’s capacity to influence participant retention. After applying the social marketing framework: the idea that determining what longitudinal participants ‘buy’ (product), at what cost (price), in what location (place) and through which communication channels (promotion), this paper aims to inform and enhance retention efforts.MethodsThis qualitative study was conducted through in-depth interviews with participants from the Raine Study that began in Western Australia in 1989. The Generation 2 participants, initially enrolled into the Raine Study as babies by their parents (Generation 1), are now young adults invited to attend follow-up studies and tests every few years. Our study defined ‘active’ participants (n = 17) as those who agreed to attend their 27 year follow-up, and ‘inactive’ (n = 12) participants as those who had attended neither of the past two follow-ups (22 and 27 years).ResultsRaine Study participants experienced core, actual and augmented product benefits. Inactive participants focused on the costs (price) associated with participation, and were more likely to suggest tele-health (place) strategies to overcome barriers to follow-up attendance. Both active and inactive participants found professional processes and friendly staff made the Raine Study environment appealing, suggested that social media (promotion) was underutilised, and offered novel ideas to enhance engagement.ConclusionsSocial marketing can support the development of differentiated strategies addressing the unique needs and wants of active and inactive participants. Sophisticated cohort segmentation can reach participants in a more meaningful way, reinforce the study ‘brand’ and guard against attrition.

Main Control Factors and Hydrocarbon Accumulation Model of Volcanic Oil Reservoirs with Complex Oil–Water Relationships: A Case Study of the Carboniferous in the Chepaizi Uplift, the Junggar Basin, China

In order to study the main control factors of volcanic reservoirs with complex oil–water relationships, the Carboniferous in the Chepaizi Uplift of the Junggar Basin was taken as an example and the lithofacies characteristics, main control factors, and hydrocarbon accumulation model of volcanic reservoirs were investigated by combining the petroleum geology with field testing (data of core analysis, well logging, formation testing, and production testing). The results show that the Carboniferous in the Chepaizi Uplift experienced three stages of volcanic activities and developed seven volcanic lithofacies bodies, distributed in a bead-string connected planar form along the Hongche fault. There is no unified oil–water interface across the whole study area and there are multiple oil–water systems within one fault block. The Carboniferous volcanic reservoir experienced two stages of hydrocarbon accumulation from two different source rocks. The distribution of faults penetrating hydrocarbon kitchens and source rocks controls the macro-scale distribution of reservoirs. The physical properties of reservoirs affect the pattern of oil and water differentiation in volcanic rock bodies, while the lithofacies body-controlled hydrocarbon accumulation mode highlighting “one rock body for one reservoir” determines the distribution of reservoirs. The matching between the paleo-structure and hydrocarbon accumulation stage controls the accumulation and adjustment of hydrocarbon distribution. The Permian source rocks in the Shawan Sag serve as the lateral hydrocarbon supply and hydrocarbons accumulate in the Carboniferous structural-lithologic traps, which are summarized as the two stages of hydrocarbon accumulation of newly generated hydrocarbons into older reservoir rocks. This study of the hydrocarbon accumulation pattern in volcanic rocks aims at guiding the development of Carboniferous reservoirs with complex oil and water relationships in this area.

STRATEGY OF DIGITAL TRANSFORMATION OF INDUSTRIAL ENTERPRISES: THE EFFECTS OF THE INTRODUCTION OF SMART MANUFACTURING TECHNOLOGIES

The socio-economic effects from the introduction of smart manufacturing technologies are of significant interest in terms of their generalisation and systematisation at the current stage of the digital transformation on industrial enterprises, as well as the objectives in the context of industrial modernization and new business model development. The proposed systematisation is based on the allocation of three groups of socio-economic effects according to the main direction of their action. The first group of effects primarily leads to reduction in the costs of industrial enterprises. The second group of effects leads mainly to an increase in revenues: some effects to a greater extent in the short and medium term, others in the long term, including through the creation of long-term distinctive capabilities, unique competencies, and sustainable competitive advantages for industrial companies. The third group of effects includes social and economic effects that are broader in focus and have a multiplicative effect, as well as the character of positive externalities (external effects).As a result of systematisation, the author identified in three groups, respectively, 12, 8 and 13 effects from the implementation of the complex of smart manufacturing technologies. The author stresses the particular importance of studying the socio-economic effects from the implementation of smart manufacturing technologies, since many improvements at the intersection of production and social transformation are currently insufficiently studied. It contrasts to the core production effects, many of which have been studied in sufficient detail by the scientific and expert communities. Systematisation, classification, differentiation and quantitative assessment of various socio-economic effects of the complex of smart manufacturing technologies can and even in a certain sense should (in the context of the tasks to modernise the economy and industries of the Russian Federation) become a separate subject area at the intersection of performance management and smart production.

Pengaruh Product Quality dan Service Quality terhadap Brand Switching Melalui Customer Value (Studi pada Mantan Pelanggan Indihome di Kota Semarang)

This study aims to determine the effect of product quality and service quality on brand switching through customer value” (study of former IndiHome customers in Semarang). This type of research is explanatory research. The sampling method in this research is non-probability sampling by purposive sampling. The data collection process uses Google forms with 100 respondents from former IndiHome customers in Semarang City as the research sample. The analysis used is regression analysis and path analysis. The results of the research show that product quality has an effect on customer value, service quality has an effect on customer value, product quality has a negative effect on brand switching, service quality has no effect on brand switching, and customer value has no effect on brand switching. The results of the path analysis show that there is an indirect effect between product quality on brand switching through customer value, so that customer value partially mediates between product quality and brand switching. in addition, there is a direct influence between service quality on brand switching through customer value, so that customer value cannot partially mediate between service quality and brand switching. Suggestions that can be given to IndiHome include updating core products and innovations in features, increasing customer awareness regarding the My IndiHome application and conducting training for officers, providing discounts or promos at certain times and actively contacting customers regularly to ensure whether there are complaints. and what problems the customer is experiencing.

Conscription insurance in pre-war Japan - Private enterprise and national interest

ABSTRACT Japan’s Conscription Law of 1873 constituted a core element of the military reforms implemented by the Meiji government. The law implied an additional burden in the form of a “tax in kind” which would not be shared equally, because only a small portion of those eligible to serve were actually recruited. As the government neither alleviated the hardship nor corrected the inequalities created by the conscription system, local communities and private entrepreneurs took initiative. One response was conscription insurance. Introduced toward the end of the 19th century, it established itself as an important segment of Japan’s insurance industry in pre-war Japan with a performance comparable to that of the life insurance industry. Despite its success, Japan’s conscription insurance has so far not attracted the attention of international scholars. This paper takes a first step towards filling the gap. It describes the background of the major companies, evaluates their core product and analyses the performance of the industry. It argues that a major factor in the success of the industry was the ability of the companies to position themselves and their product as serving the national interest.

Soft magnetic composite core properties in normalized representation

In this work a theoretical investigation will be presented on the DC field dependence of magnetic induction (B(H)) and of effective permeability (µeff(H)) of the soft magnetic composites samples. Two characteristic fields have been deduced for a set of powder cores: the anisotropy field, HK, applying the Barandiaran method and the curvature parameter, c, applying a fitting procedure. These two parameters are strongly correlated. The field dependencies of magnetizations and of effective permeability’s collapse in a common curve applying the anisotropy field as a normalizing parameter. Such a normalized representation can help the check of consistency of the technology for production of powder cores. Effective magnetic induction saturation was introduced as an average product of the anisotropy field and effective permeability which can be used as a figure of merit parameter comparing to the saturation magnetic induction of the material of the powder cores.

Reservoir Permeability Prediction Based on Analogy and Machine Learning Methods: Field Cases in DLG Block of Jing’an Oilfield, China

Abstract Reservoir permeability, generally determined by experimental or well testing methods, is an essential parameter in the oil and gas field development. In this paper, we present a novel analogy and machine learning method to predict reservoir permeability. Firstly, the core test and production data of other 24 blocks (analog blocks) are counted according to the DLG block (target block) of Jing’an Oilfield, and the permeability analogy parameters including porosity, shale content, reservoir thickness, oil saturation, liquid production, and production pressure difference are optimized by Pearson and principal component analysis. Then, the fuzzy matter element method is used to calculate the similarity between the target block and analog blocks. According to the similarity calculation results, reservoir permeability of DLG block is predicted by reservoir engineering method (the relationship between core permeability and porosity of QK-D7 in similar blocks) and machine learning method (random forest, gradient boosting decision tree, light gradient boosting machine, and categorical boosting). By comparing the prediction accuracy of the two methods through the evaluation index determination coefficient (R2) and root mean square error (RMSE), the CatBoost model has higher accuracy in predicting reservoir permeability, with R2 of 0.951 and RMSE of 0.139. Finally, the CatBoost model is selected to predict reservoir permeability of 121 oil wells in the DLG block. This work uses simple logging and production data to quickly and accurately predict reservoir permeability without coring and testing. At the same time, the prediction results are well applied to the formulation of DLG block development technology strategy, which provides a new idea for the application of machine learning to predict oilfield parameters.

Creating a Homey Coffee Shop Concept in "Kedai Sepenuh Kopi"

Service is the core product that provides essential consumer benefits. A business with excellence in service quality will increase customer satisfaction. This study aims to explain the company following the planning carried out by taking into account several aspects that have been previously analyzed and prove the feasibility analysis of the business that has been made goes according to plan. The method used is observation to see the development of Sepenuh Kopi as a new cafe in implementing its business. The results of this study reveal that business practices have been carried out well as a contemporary cafe project, starting from September 2019 to March 2022. In the current period in the first three months, namely September, October, and November, which is the initial introduction stage of Sepenuh Kopi as a newly established shop, the desired target consumer has not yet been achieved. However, the following month there was an increase and exceeded the desired sales target. The Covid-19 pandemic has caused sales to drop drastically. However, income gradually improved after making changes and holding a soft opening.

Pengaruh Kontribusi Pembiayaan Mikro Modal Kerja di dalam Lembaga Keuangan Perbankan Syariah terhadap Pengembangan Usaha Mikro Kecil dan Menengah (UMKM) di Kota Palembang (Studi Kasus Bank Syariah Indonesia KC Demang)

Islamic banking is a banking system whose implementation is based on Islamic law. Financial institutions whose operational activities and products adhere to Islamic principles based on Islamic principles Quran and Hadith. The characteristics of Islamic banking are actually based on the core product of profit-sharing financing developed in the product musyarakah and mudharabah financing. The presence of Islamic banking should have a major impact on real sector growth. One unit Businesses that need to be developed to encourage real sector growth are Micro, Small and Medium Enterprises (MSMEs) which in the current national economy has a very important position, because of its contribution to employment and Gross Domestic Product (GDP). As well as its flexibility and toughness in facing an economic crisis. The role of working capital microfinance plays an important role in providing guidance to (MSMEs) to develop businesses, provide consulting on business development and facilitating the existence of a place of business in the Palembang city.

Evaluation of additive manufacturing of sand cores in terms of the resulting surface roughness

Obtaining a good surface finish on casting is challenging and depends on the dimension of the sand particles and the processing method of the mold. Evolving modern trends in mould and core production as a binder jetting technology is an option and it is more than desirable to evaluate and remove any possible negative effects. The aim of this study is to compare the influence of furan no-bake technology and 3D printing method on the surface quality of cores and cavities formed in aluminium alloy castings. In addition to the sieve analysis and mechanical properties of the moulding mixtures, the roughness (Ra, Rz) of the cores and resulting casting surfaces of individual samples were compared in this study.

Internet penetration and multi‐product exporters: Firm‐level evidence from China

AbstractThis study explores the impact of Internet penetration on the firm‐product‐level behaviour of multi‐product exporters. While a substantial body of literature has explored the effect of the Internet on firm performance, especially extensive and intensive margins, few studies examine the product‐level behaviour within firms. Using highly disaggregated firm‐product‐level data covering Chinese manufacturing industrial firms from 2000 to 2007, we provide evidence on the effects of the Internet on product mix and product switching within firms. Specifically, because of the reduction in export market entry costs, the Internet can encourage more firms to enter the export market and increase market competition, which causes multi‐product exporters to skew exports towards best‐performing products and drop the products furthest away from its core competence. Meanwhile, the Internet can increase multi‐exporters' productivity and encourage firms to introduce new products, which are also further away from the core product. Productivity and competition cause multi‐product exporters to exhibit product switching, which results in the expansion of product scope.

Daya Saing Industri Furnitur Indonesia dalam Perdagangan Global (Studi Komparasi dengan Vietnam)

Furniture products with significant value added are increasingly being seen as a strategic objective for the industry of forest product. Furniture is one of the strategic commodities for the Indonesian economy. One of the pillars which determines the competitiveness of export furniture products is marketing. This study aims to determine the competitiveness of the Indonesian furniture industry in terms of marketing. In this case, Vietnam used as an object of comparison since they has been Indonesia's main competitor in the furniture trade for decades. The data was obtained by using literature study method. This research used mixed method 5P marketing analysis which consists of position, product, place, promotion, and price. The competitiveness of Indonesian furniture industry was still relatively low compared to Vietnam’s. In terms of position, Indonesia and Vietnam have market segments which are sensitive to illegal timber such as the United States and the European Union. Even though Indonesia already has a timber legality assurance system through the Timber Legality Verification System (SVLK), the export values of Indonesian furniture is still less than Vietnam. From a product perspective, Indonesian furniture industry is slightly greater than Vietnamese furniture industry. Indonesia has reached the level of augmented product, greater than Vietnam, which is mostly still a core product. However, Vietnam's furniture industry is experiencing a fairly rapid development. Currently, Vietnam's timber products are in demand with the international market due to their innovative designs. In terms of location (distribution), both countries are being assisted from easy access to global shipping. In terms of promotion, Indonesia needs to emulate Vietnam by facilitating the furniture industry (especially small and medium industries) to participate in international exhibition activities, so as to expand the furniture market network. In term of price, Vietnam is greater in offering lower prices since it was supported by the availability of abundant labor at low prices and investment support. Meanwhile, Indonesia has the advantage of the large availability of raw materials from production forests.

OCLC Annual Report 2020–2021 Translated

The abridged translation into Russian of the annual report of OCLC (Rise beyond OCLC Annual Report 2020–2021) is offered. The traditional vectors of expanding accessibility and functionality of the company’s core product, namely WorldCat, and increasing focus on document delivery and professional partnerships with publishers’ are demonstrated. Special attention is given to linked data and project to involve wide public worldwide in cataloguing.The majority of public and academic libraries prefer using the world catalog WorldCat thus avoiding large scale cataloguing processes. Unfortunately, this country drags heels about using this treasure: Cyberleninka joined the WorldCat in 2016; the Russian union catalog Libnet comprises 13.6 mln recors (as for 2020), and the Union Catalog of sci-tech literature – 1.2 mln entries (as for 2022). At the same time, based on OCLC Annual Report 2020–2021 data, the WorldCat embraces 515 mln records reflecting 3.1 billion items in library collections. Such impromptness may be due to Russian professionals’ ignorance of the English language.

Push and pull factors associated with the consumption of women's professional basketball games: A canonical correlation analysis.

The purpose of this study was to empirically investigate the interrelationships between push and pull factors associated with the consumption of women’s professional basketball games. Multiple factors pertaining to sport consumers’ internal needs, identified as “push” factors, contain various intangible socio-psychological motivations representing an individual’s intrinsic desires that drive consumers toward certain goal-driven behaviors. On the other hand, “pull” factors, related to the supply side, refer to the different aspects of sport products the management of sport teams provides. It is imperative to obtain a better understanding of the push–pull interaction so that sport marketers can design their products to satisfy spectators’ expectations with different needs. Spectators (N = 628) attending WNBA games responded to an on-site survey. CFA was conducted to ensure the psychometric properties of the scales, which showed that the overall model fit the data well. A canonical correlation analysis was performed, and two significant functions were revealed by the dimension reduction analysis. The first function [F(40,2,683) = 4.49, p < 0.001]: I-Want-Everything-Consumer suggests that the market segment comprises individuals with multiple needs (ranged from 0.55 to 0.85) and expectations (ranged from 0.55 to 0.89), both of which need to be met simultaneously. Thus, sports marketers can satisfy WNBA consumers’ needs by enhancing the quality of tangible pull factors. The second function [F(28,2,222) = 2.38, p < 0.001]: Achievement-Seekers revealed that the consumers motivated by vicarious achievement (–0.59) expect game promotion (–0.55) rather than the quality of the opposing team (0.42), indicating that sport marketers should provide tailored promotional strategies to satisfy this segment of consumers. Specifically, the findings of this study can be used to segment consumers based upon fan motives (i.e., push factors) and position products accordingly by managing the controllable aspects of sport products (i.e., pull factors). This study provides empirical evidence of the relationship between WNBA consumers’ multiple needs and attributes associated with the WNBA core product.

Collaboration, technology &amp; innovation in the scale-up of viral vector manufacturing

Matthias Hebben has been serving as vice president of technology development at LogicBio Therapeutics since February 2019. In his role, he is leading the CMC efforts, including vector core, capsid optimization, process development, analytical development and clinical product manufacturing. Before that, he served as director of technology development and head of bioprocess development at Genethon for 6 years. Before that, he occupied several positions at Vivalis (Valneva), Intervet Shering Plough and Virbac. Matthias has a PhD in molecular biology and a MSc in bioprocess engineering.

An Index Approach to Measuring Product Differentiation: A Hedonic Analysis of Airfares

AbstractThe main objective of this paper is to introduce an Allen‐type index of differentiation based on cost functions. With this index, we create an economic measure of product differentiation that quantifies differences between products. Applied research has some generally accepted economic measures, for example, the Herfindahl–Hirschman Index for market concentration, or the Gini coefficient for inequality. Product differentiation, however, does not yet have an established measure. Our objective is to fill that gap and introduce a measure that can be used in market‐related applied research such as market power, antitrust, price indexes, or market strategy. To operationalize the index, we introduce the concept of a core product and use cost functions to measure the degree of differentiation from the core product. To demonstrate the use of the index, we study the effect of product differentiation on price formation in the airline industry using an enhanced hedonic model. The model is empirically tested on 103,980 observations of quarterly US domestic airfare data between 2002 and 2016 and shows that product differentiation has a significant effect on both price and mark‐up.

The Effectiveness of BUMDes in Increasing Tourist Visits through the Pentahelix Model at Tourism Village Sub-District of Silahisabungan Dairi Regency, Indonesia

The purpose of this study was to analyse the efforts of Village-Owned Enterprises (BUMDes) in increasing tourist visits in the tourism village of Silalahi II, Silahisabungan Sub-district, Dairi Regency. The method used in this study was a descriptive method with a qualitative approach. Research subjects were expected to provide complete information about the problems posed. The number of research subjects were six (6) people and each was given questions to answer five (5) themes proposed by the researchers. The results in the study that the efforts of BUMDes in increasing tourist visits in the tourism village of Silalahi II, Silahisabungan District, Dairi Regency were (1) Mapping of tourism products and markets based on the concept of core products and supporting products; (2) Strategy formulation, namely potential targets for tourism destinations and tourism product development strategies, Customer Management and Marketing Management for the tourism village of Silalahi II, Silahisabungan Sub-district, Dairi Regency; (3) Strategy implementation, namely tourism village homestay products, Customer Management development, and Marketing Management development.

An Applied Knowledge Framework to enable knowledge reuse in consulting firms

Knowledge is a core product of management consultancies. Consulting firms consider knowledge management to be a core capability for achieving competitive advantage. ​Knowledge management, especially in project management, faces a lot of challenges that are crucial for the efficiency of work and as a result the success of the projects. According to ISO 30401, there are some knowledge management enablers like human capital, knowledge processes, technology and infrastructure, governance and knowledge sharing culture. Among them are corporate sharing culture, technology and the structure of knowledge which is the most important for companies. The challenges of knowledge management in a consulting business, for example, time saving and efficiency can be solved within the creation of a structured and target-oriented knowledge framework which enables the reuse of knowledge in the whole consulting company. Qualitative methods were used to conceive, design, and to implement the knowledge framework. The approach has involved workshops that included associates, managers, senior consultants, and project directors. This approach enabled the author to record internal requirements and pain points in the current knowledge management base approach, conduct analysis, set priorities, and conceive a new knowledge framework that was able to solve the pain points of consultants and project managers and support them in their daily business. The new framework includes the following components: a flexible structure that adopts itself to defined tagging structure, the storage of knowledge according to the allocation of the content format, and automatically generated statistics to newly upload and download as well as most used files and documents. The results of conducted feedback workshops and interviews showed that the alignment of the new knowledge framework information architecture to the company’s service portfolio and user-friendly design enabled a quick and target-oriented search for the documents and awareness of relevant and important information and knowledge and as a result lead to the increased efficiency of project work in the consulting company.

Metaheuristic algorithms for a special cutting stock problem with multiple stocks in the transformer manufacturing industry

This paper investigates a special cutting stock problem arisen in the production of iron core from the transformer manufacturing industry, in which a set of strips are cut from coiled stocks with multiple sizes. This problem has three main characteristics: the needed strips can be split into sub strips, the guillotine-cut, and the peculiar optimization objective, i.e., minimizing the total number of strips. The specific constraints prevent the direct application of procedures developed for the standard cutting stock problem. Hence, we developed a new constructive heuristic, called placer, which builds a layout starting from an ordered list representing stocks and needed strips. This polynomial procedure contains three helpful strategies, namely, double-layer, searching, and randomizing. Based on this procedure, we design a randomized multi-start algorithm to solve the problem and integrate the placer into three well-known metaheuristics, i.e., biased genetic algorithm, variable neighborhood search, and grey wolf optimization. To evaluate the performance of the proposed algorithms, computational experiments are conducted on 135 test instances generated from real-world data provided by the transformer manufacturing company.